JP2589692Y2 - Liquid supply thread guide - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid supply thread guide for applying a liquid such as an oil agent to a yarn, and more particularly to a liquid supply thread guide capable of reducing the running resistance of the yarn.

[0002]

2. Description of the Related Art Various guides of various shapes are used as guides for textile machines according to their uses. For example, in a process of melt-spinning synthetic fibers, a liquid such as an oil agent is applied to the yarns. A guide called a liquid supply thread guide is used. The liquid supply thread guide is made of an integrally molded product made of a metal coated on the surface, a metal plated on the surface, or a ceramic such as high-purity alumina, as shown in a vertical side view of FIG. It has a connection pipe 101 for connecting a liquid supply pipe for supplying a liquid, and a guide body 102 connected to the tip of the connection pipe.

A guide groove 103 for guiding the yarn S is formed at the center in the width direction of the guide main body 102. A liquid supply hole 108 for supplying a liquid to the yarn S passing through the guide groove 103 has a connecting pipe 101 and the guide main body 102. And formed over. The guide groove 103 has a threading portion 105 having a horizontal groove bottom, and an introduction portion 106 having a groove bottom formed to be inclined upward toward the threading portion 105 in order to introduce the yarn S into the threading portion 105. And a lead-out portion 107 whose groove bottom is formed to be inclined upward toward the yarn-attaching portion 105 in order to lead the yarn S from the yarn-attaching portion 105.
8 to supply the liquid to the yarn S.

[0004] The groove bottom of the threading portion 105 generally has a length of 10 to 21.
Since it is formed in a linear shape of about mm, it is also called a straight portion.

[0005]

In recent years, textile machines that require high efficiency have been required to increase the running speed of the yarn. Therefore, the running resistance of the yarn in the liquid feed yarn guide is also high. It is urgently required to reduce the amount. In addition, when the running speed of the yarn is increased, the yarn is easily damaged during running. Therefore, it is also required to prevent the yarn from being damaged.

The present invention has been proposed to meet these requirements, and has as its object to provide a liquid supply yarn guide which can reduce the running resistance of the yarn.

[0007]

A liquid supply thread guide according to the present invention is a liquid supply thread guide formed of ceramics and having a guide groove for guiding a yarn. The groove bottom is provided with an upwardly inclined introduction part having a liquid supply hole and a downwardly inclined lead-out part, and is provided with a thread connecting part having a concave portion between the introduction part and the lead-out part. For example, the first liquid supply thread guide of the present invention has the entire threading portion recessed in the groove bottom direction, and the groove bottom at the junction between the introduction portion and the threading portion, and the threading portion and the lead-out portion. The bottom of the groove at the joint is rounded or rounded.

Further, the second liquid supply thread guide according to the present invention is formed in a straight shape with the length of the above-mentioned threading portion being about 5 to 10 mm, and a liquid pool is formed at the bottom of the groove of this threading portion. A recess is formed.

[0009]

In the first liquid supply thread guide according to the present invention,
Since the groove bottom of the yarn joining portion is recessed in the groove bottom direction, the contact area between the yarn and the yarn joining portion is reduced, and the running resistance of the yarn is reduced. In addition, since the groove bottom is rounded off at the joint between the yarn joining portion and the introduction portion and the joint between the yarn joining portion and the lead-out portion, the introduction portion and the yarn joining portion, or The connecting portion and the lead-out portion are smoothly continuous with each other, so that the running resistance of the yarn in contact with these connecting portions is reduced, and the yarn is less likely to be damaged.

[0010] The amount of depression of the ligature depends on the length of the ligature, but is 0.5 to 1 mm when the length of the ligature is about 10 to 21 mm.
When the diameter is smaller than 0.5 mm, the yarn vibrates and comes into contact, and the effect of reducing the running resistance is significantly reduced. It is not preferable because the vibration becomes large and the running of the yarn may become unstable.

The radius of curvature of the R-surface or spherical surface of the joint between the yarn joining part and the introduction part and the joint between the yarn joining part, the lead-out part and the joint is 0.5.
It is preferable to set the radius to about 5 mm.
If the diameter is smaller than 0.5 mm, the yarn is easily damaged, and if it is larger than 5 mm, the contact length or contact area of the yarn is increased, and the running resistance of the yarn is increased.

The chamfer radius of these joints is 0.5 to 2.5 mm
In this case, the reduction of the running resistance of the yarn and the prevention of the yarn from being damaged are realized most harmoniously, and an optimum result can be obtained. In the second liquid supply yarn guide according to the present invention, the length or contact area of the yarn in contact with the liquid supply yarn guide is shorter than before by forming the length of the yarn joining portion to about 5 to 10 mm. As a result, the running resistance of the yarn is reduced, and the liquid accumulated in the liquid pool adheres to the yarn and intervenes between the yarn and the yarn-attaching portion to lubricate the space between the yarn and the groove bottom of the yarn-attaching portion. Therefore, the running resistance of the yarn is further reduced.

The length of the yarn joining portion is preferably about 5 to 10 mm. If the length is more than 10 mm, the effect of reducing the running resistance of the yarn is significantly reduced, and it is not preferable. If the length is less than 5 mm, an oil reservoir is formed. It is not preferable because it becomes difficult.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described specifically with reference to the drawings. The liquid supply guide according to one embodiment of the present invention shown in the vertical side view of FIG. 1 is formed by pressing a high-purity alumina raw material into a predetermined shape by a press, and sintering the product by, for example, an NC cutting machine to form a liquid supply line guide. It is the one that has been cut.

The cutting tool used in this cutting process is as follows:
Although not particularly limited, it is preferable to use a carbide cutting tool in order to increase processing accuracy and cutting efficiency. Further, the cutting machine used for this cutting is not particularly limited, but an NC cutting machine capable of performing cutting such as an arbitrary angle and a hole diameter by simply changing a control program regardless of the number of cuts is used. Is preferred.

This liquid supply thread guide includes a connection pipe 1 to which an oil supply pipe is connected, and a guide body 2 continuous with an upper end of the connection pipe. As shown in a front view of FIG. A guide groove 3 for guiding the yarn is formed at the center. As shown in the enlarged cross-sectional views of FIGS. 1 and 3, the guide groove 3 has a threading portion 5 whose groove bottom is recessed below the horizontal line 4, for example, in an arc shape, and a thread S is inserted into the threading portion 5. An introduction portion 6 whose groove bottom rises and slopes toward the yarn joining portion 5 for introduction, and a leading portion 7 whose groove bottom rises and slopes toward the yarn joining portion 5 to derive the yarn S from the yarn joining portion 5. And a liquid supply hole 8 that opens from the connection pipe 1 to the groove bottom of the introduction portion 6 is formed.

As described above, since the thread S is recessed downward from the groove bottom horizontal line 4, the area where the yarn S comes into contact with the yarn joining part 5 can be reduced, and the running resistance of the yarn can be reduced. The depth of the recessed portion of the threading portion 5 may be appropriately changed according to the length of the threading portion 5, but the length of the threading portion 5 is 10 to 21 mm.
If it is less than 0.5 mm, it is preferable that it is less than 0.5 mm. If it is less than 0.5 mm, the effect of reducing the running resistance of the yarn S is significantly reduced.
If it is larger than 1 mm, the yarn S passing through the yarn joining section 5 is likely to vibrate, and the running stability of the yarn S may be impaired, which is not preferable.

The groove bottom 9 at the junction between the introduction section 5 and the threading section 4 and the groove bottom 10 at the junction between the threading section 4 and the lead-out section 6 are R
The surface or the spherical surface is formed, so that these groove bottoms 9 and 10 are formed.
The running resistance of the yarn S contacting the
The yarn is prevented from being damaged. These groove bottoms 9 and 10
It is preferable that the radius of curvature of the R surface or spherical surface is about 0.5 mm to 5 mm. If this radius is smaller than 0.5 mm, the yarn is liable to be damaged.
If it is larger than 5 mm, the contact resistance between the yarn and the groove bottoms 9 and 10 increases, and therefore the running resistance of the yarn increases, which is not preferable. The most preferable result is obtained when the radius of the round surface or spherical surface of the groove bottoms 9 and 10 is in the range of 0.5 to 2.5 mm.

A liquid supply thread guide according to another embodiment of the present invention shown in a vertical sectional side view of FIG. 4 has a connection pipe 11 to which an oil supply pipe is connected.
5 and a guide body 12 continuous with the upper end thereof.
As shown in the front view of FIG. 1, a guide groove 13 for guiding a yarn is formed in the center of the guide body 12 in the width direction. This guide groove 13
As shown in FIG. 4, a threading portion 15 having a horizontal groove bottom, and an introduction portion 16 having a groove bottom rising and inclining toward the threading portion 15 to introduce the yarn S into the threading portion 15, A leading portion 17 whose groove bottom rises and slopes toward the yarn joining portion 15 in order to lead the yarn S from the thread portion 15.
And a liquid supply hole 18 that opens from the connection pipe 11 to the groove bottom of the introduction portion 16 is formed.

A liquid pool 19 is formed in the above-mentioned yarn connecting portion 15,
A part of the oil agent supplied to the yarn S from the liquid supply hole 18 is carried by the yarn S to the liquid pool 19, and the oil agent is reliably spread over the surface of the yarn S and sent out to the outlet 17. By spreading the oil agent on the yarn S in this manner, the running resistance of the yarn S decreases due to the lubricating action of the oil agent interposed between the yarn S and the yarn joining portion 15.

Although the liquid pool 19 is not particularly limited,
In order to be able to spread the oil agent over the entirety of the yarn S, it is preferable that the oily agent be provided so as to extend in a direction perpendicular to the yarn S to at least twice the radius of curvature of the groove bottom. Also, the pool
The shape of 19 is not particularly limited. For example, it may be formed in a groove shape zigzag, but it is recommended to be formed in a round hole in order to simplify the processing and reduce the processing cost.

Other configurations, operations and effects of this embodiment are the same as those of the above-described embodiment, and therefore, description thereof will be omitted to avoid duplication.

[0023]

As described above, in the first liquid supply thread guide according to the present invention, since the intermediate portion of the yarn-attaching portion is recessed, the length at which the yarn comes into contact with the yarn-attaching surface is reduced. This has the effect of reducing the area and reducing the running resistance of the yarn.
In addition, the first liquid supply thread guide according to the present invention is configured such that the groove bottom at the joint between the introduction part and the yarn joining part and the groove bottom at the joint between the yarn joining part and the lead-out part are rounded or spherical. Therefore, the running resistance of the yarn contacting the groove bottom of these joints can be further reduced, and the yarn contacting the groove bottom of these joints is less likely to be damaged.

In the second liquid supply thread guide according to the present invention, the contact area between the thread and the thread-joining portion is reduced by forming the length of the thread-joining portion as short as about 5 to 10 mm, and the yarn travels. This has the effect of reducing the resistance. In the second liquid supply yarn guide of the present invention, a liquid pool is formed in the yarn joining section, and the liquid accumulated in the liquid pool is spread over the surface of the yarn passing through the yarn joining section. The liquid can be interposed between the yarn and the yarn joining portion, and the lubricating effect of the liquid can further reduce the running resistance of the yarn.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a liquid supply thread guide according to an embodiment of the present invention.

FIG. 2 is a front view of the liquid supply thread guide according to the embodiment of the present invention.

FIG. 3 is an enlarged vertical sectional side view of a main part of the liquid supply thread guide according to one embodiment of the present invention.

FIG. 4 is a longitudinal sectional side view of a liquid supply thread guide according to another embodiment of the present invention.

FIG. 5 is a front view of a liquid supply thread guide according to another embodiment of the present invention.

FIG. 6 is a longitudinal sectional side view of a conventional example.

[Explanation of symbols]

 3. Guide groove 5 ... Yarn section 6 ... Introducing section 7 .... Outgoing section 9.10 ... Groove bottom 13 ... Guide groove 15 ... Yarn section 16 ... Introducing section 19 ... Liquid pool

Claims (1)

(57) [Scope of request for utility model registration] 1. A liquid feed thread guide formed of ceramics and having a guide groove for guiding a yarn, wherein the groove bottom of the guide groove has an upwardly inclined introduction section having a liquid supply hole and a downwardly inclined lead-out section. And a thread connecting portion having a concave portion between the introduction portion and the lead-out portion.